High school student Toujo Basara's life has taken a turn for the strange. When his father remarries, a step parent isn't Basara's only new family member-he also gets two step-sisters... drop-dead gorgeous step sisters, who also happen to be member...
Tetsuto Uesu is best known as the author of The Testament of Sister New Devil light novel series. Fumihiro Kiso is a Japanese manga artist best known for his work on The Testament of Sister New Devil STORM!and his current ongoing series Tsuwamono!!